Which of the following is NOT one of the reasons that preoperational children are at great risk when crossing busy streets?

a. Preoperational children tend to be egocentric.
b. Preoperational children lack object permanence.
c. Younger children cannot understand why the driver of a car can't see them if they can see the car.
d. Children under the age of seven cannot consistently judge speeds and distances of oncoming cars.

ANSWER: b